Filing-machine



(No Model.)

J. RIDDELL. FILING MACHINE.

Patented Jan. 22, 1895.

FIG 4 carefully filed out.

UNITE S TsNr JOHN RIDDELLOFSAUGUS, MASSACHUSETTS, Ass enon TOTHETHOMSON- HOUSTONELEOTRIC COMPANY, or CONNECTICUT.

FlLlNG-MACHlN E.-- I

SPECIFICATION forming part of Letters Fatent No; 532,819, dated January22,1895.

Application filed May 23, 1892' Serial No. (N0 model-l To aZZ whom itmay concern: 7

Be it known that 1, JOHN 'RIDDELL, a citizen of the United States,residing at Saugus, county of Essex, State of Massachusetts, haveinvented a certain new and useful Improvement in AutomaticFiling-Machines, of which the following is a specification.

The invention relates to automatic filing machines, and is especiallydesigned for filing out the slots in armatures in which the armatureconductors are wound.

The armatures are built up of iron plates,

or laminae, and are punched from sheet iron, and, for the larger sizesof machines, it becomes necessary, to make them of several pieces or ofsegments which are usually of corresponding form. A die for punchingsuch a sheet, or segment of a sheet, at one operation, with the slotsfor the. armature conductors and bolt holes complete, is difficult tomake and if broken is vry costly to replace. The armature slots and boltholes are therefore each punched by a separate die and in a separateoperation. When these armature sheets or segments are assembled, inbuilding up the armature the slots only approximately coincide as toposition, and, as it is necessary to have smooth sides in the slots toavoid irregularities or sharp projections, which would chafe theinsulation of the armature conductors or pierce the same and cause shortcircuits, the slots require to be This operation has hitherto been doneby hand at considerable expense. My invention performs this work in asatisfactory manner at a speed much greater than can be attained by handwork and one man is able to look after and keep a number of suchmachines continually working.

In the drawings, Figure 1 is atop plan view of the files. Fig. 2 is aside elevation. Fig. 3 is a cross section, and Fig. 4 is a view, of themachine.

The files F, F, are retained between the outer surfaces of springcarriers S, S, and the I surface to be filed, as is clearly shown in thefigures, and are provided with a certain amount of lost motion endwisebetween the engaging portion or shoulders a, b, of the spring carriersS, S.

The files may conform to the shape of the slot to be cut and their endsmay be made angling or oblique so as to leave the file shorter at thetop than at the bottom, and the engaging'surfaces a, I) also correspondto the 5 5 angle at the end of the file. The purpose of this arrangementis to force the file toward the bottom of the slot in its cutting motionand to release it when moving in the reverse direction. In case,however, the filing is required to be done quite uniformly over theentire surface, the ends of the files and the engaging surfaces (1, b,may be square, as shown in dotted lines.

The armature A, is supported upon the shaft 6 5 X, about which it can berotated. The files are given a reciprocating motion byan arm D, operatedby a swinging arm D, which latter is pivoted at P, and is slotted at Oand O.

A pin from the arm D, engages with the slot O, and a pin P, secured to arotating pulley W, operates in the slot 0. The rotation of the pulley W,by a belt B or by other means, gives a reciprocating motion to theswinging arm D, which is communicated to the arm D, and the files. Thespeed of working of the apparatus can be increased by this means, as thereturn stroke is relatively faster than the cutting stroke, as is commonand well known. v

The purpose of the slot 0, is to adapt the apparatus to differentdiameters of armatures, and the holes h or a slot in the arm D, permitadjustments of the files in the direction of the slot. number of filesmay be worked simultaneously in the same armature, employing, ifdesired, as many files as there are slots, but the gain in the rate offiling is partially ofiset by the increased time required to adjustthefiles 90 in position.

The files F, and F, are held in position merely by spring pressurebetween the arms S, S, and the armature A. In the cutting stroke, whichis toward the right in the fig- 5 ure, the files F, F, are moved towardthe shoulders a and are forced against the armature with a considerablespring pressure and quite evenly throughout their length. In the returnstroke, the files move toward the shoulloo ders b, with little or nopressure against the armature A.

Instead of filing one slot at a time a i What I claim as new, and desireto secure by Letters Patent, is

1. In a filing machine, the combination with a file holder, of a filemovable lengthwise thereon, and means for limiting the endwise movementof the file thereon.

2. In a filing machine, the combination with a file holder, of a filemovable endwise thereon, and means for regulating these movements.

3. In a filing machine, the combination with a file holder having stopsand guides, of a file movable endwise thereon and regulated in itsmovement by the stops and guides.

4. In a filing machine, a file holder formed with vibratable arms, incombination with files movable endwise on said arms, and means forlimiting the endwise movement of the files thereon.

5. In a filing machine, a file holder formed with vibratable arms, incombination with files movable endwise 011 said arms, and means forregulating these movements.

6. In a filing machine, a file holder provided with stops, incombination with a file movable endwise between the stops and adaptedthereby to have lost motion.

7. In a filing machine, the combination with a spring arm havingshoulders, of a file shorter than the space between said shoulders, soas to have an endwise play, substantially as set forth.

8. The combination with a file holder having at each end an obliqueshoulder a, b, of a file held loosely between said shoulders, and havingoblique ends, substantially as described.

9. In a machine for filing slots, a file carrier consisting of twospring arms adapted to press against the sides of the slot, and a fileloosely engaging with the outer side of each arm, substantially asdescribed.

10. In a filing machine, a horizontal reciprocating file carrying arm,provided with Vibratable file holder arms, and files mounted thereon andmovable endwise on said arms, in combination with mechanism forreciprocating said horizontal file carrying arm.

In witness whereof I have hereto set my hand this 20th day of May, 1892.

JOHN RIDDELL.

Witnesses:

JOHN W. GIBBONEY, BENJAMIN B. HULL.

